Code
// www.ekostra.com
/***************************************************************************************************/
/*
This is an Arduino library for Aosong ASAIR AHT10, AHT15 Digital Humidity & Temperature Sensor
written by : enjoyneering79
sourse code: https://github.com/enjoyneering/
This chip uses I2C bus to communicate, specials pins are required to interface
Board: SDA SCL Level
Uno, Mini, Pro, ATmega168, ATmega328..... A4 A5 5v
Mega2560................................. 20 21 5v
Due, SAM3X8E............................. 20 21 3.3v
Leonardo, Micro, ATmega32U4.............. 2 3 5v
Digistump, Trinket, ATtiny85............. 0/physical pin no.5 2/physical pin no.7 5v
Blue Pill, STM32F103xxxx boards.......... PB7 PB6 3.3v/5v
ESP8266 ESP-01........................... GPIO0/D5 GPIO2/D3 3.3v/5v
NodeMCU 1.0, WeMos D1 Mini............... GPIO4/D2 GPIO5/D1 3.3v/5v
ESP32.................................... GPIO21/D21 GPIO22/D22 3.3v
Frameworks & Libraries:
ATtiny Core - https://github.com/SpenceKonde/ATTinyCore
ESP32 Core - https://github.com/espressif/arduino-esp32
ESP8266 Core - https://github.com/esp8266/Arduino
STM32 Core - https://github.com/stm32duino/Arduino_Core_STM32
- https://github.com/rogerclarkmelbourne/Arduino_STM32
GNU GPL license, all text above must be included in any redistribution,
see link for details - https://www.gnu.org/licenses/licenses.html
*/
/***************************************************************************************************/
#include <AHT10.h>
#include <Wire.h>
uint8_t readStatus = 0;
AHT10 myAHT10(AHT10_ADDRESS_0X38);
void setup()
{
Serial.begin(115200);
Serial.println();
while (myAHT10.begin() != true)
{
Serial.println(F("AHT10 not connected or fail to load calibration coefficient")); //(F()) save string to flash & keeps dynamic memory free
delay(5000);
}
Serial.println(F("AHT10 OK"));
//Wire.setClock(400000); //experimental I2C speed! 400KHz, default 100KHz
}
void loop()
{
/* DEMO - 1, every temperature or humidity call will read 6 bytes over I2C, total 12 bytes */
Serial.println(F("DEMO 1: read 12-bytes, show 255 if communication error is occurred"));
Serial.print(F("Temperature: ")); Serial.print(myAHT10.readTemperature()); Serial.println(F(" +-0.3C")); //by default "AHT10_FORCE_READ_DATA"
Serial.print(F("Humidity...: ")); Serial.print(myAHT10.readHumidity()); Serial.println(F(" +-2%")); //by default "AHT10_FORCE_READ_DATA"
/* DEMO - 2, temperature call will read 6 bytes via I2C, humidity will use same 6 bytes */
Serial.println(F("DEMO 2: read 6 byte, show 255 if communication error is occurred"));
Serial.print(F("Temperature: ")); Serial.print(myAHT10.readTemperature(AHT10_FORCE_READ_DATA)); Serial.println(F(" +-0.3C"));
Serial.print(F("Humidity...: ")); Serial.print(myAHT10.readHumidity(AHT10_USE_READ_DATA)); Serial.println(F(" +-2%"));
/* DEMO - 3, same as demo2 but different call procedure */
Serial.println(F("DEMO 3: read 6-bytes, show 255 if communication error is occurred"));
readStatus = myAHT10.readRawData(); //read 6 bytes from AHT10 over I2C
if (readStatus != AHT10_ERROR)
{
Serial.print(F("Temperature: ")); Serial.print(myAHT10.readTemperature(AHT10_USE_READ_DATA)); Serial.println(F(" +-0.3C"));
Serial.print(F("Humidity...: ")); Serial.print(myAHT10.readHumidity(AHT10_USE_READ_DATA)); Serial.println(F(" +-2%"));
}
else
{
Serial.print(F("Failed to read - reset: "));
Serial.println(myAHT10.softReset()); //reset 1-success, 0-failed
}
delay(10000); //recomended polling frequency 8sec..30sec
}
